/*
 * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 * 
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 * 
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
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package org.graalvm.visualvm.host.impl;

import org.graalvm.visualvm.core.datasource.Storage;
import java.io.File;

/**
 *
 * @author Jiri Sedlacek
 */
public final class HostsSupportImpl {

    public static final String LOCALHOST_PROPERTIES_FILENAME = "localhost" + Storage.DEFAULT_PROPERTIES_EXT; // NOI18N

    private static final String HOSTS_STORAGE_DIRNAME = "hosts";    // NOI18N
    private static final Object hostsStorageDirectoryStringLock = new Object();
    // @GuardedBy hostsStorageDirectoryStringLock
    private static String hostsStorageDirectoryString;


    public static String getStorageDirectoryString() {
        synchronized(hostsStorageDirectoryStringLock) {
            if (hostsStorageDirectoryString == null)
                hostsStorageDirectoryString = Storage.getPersistentStorageDirectoryString() +
                        File.separator + HOSTS_STORAGE_DIRNAME;
            return hostsStorageDirectoryString;
        }
    }

}
